12002111 has 6 divisors (see below), whose sum is σ = 13192536. Its totient is φ = 10910900.

The previous prime is 12002093. The next prime is 12002147. The reversal of 12002111 is 11120021.

It is a de Polignac number, because none of the positive numbers 2^k-12002111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49475 + ... + 49716.

It is an arithmetic number, because the mean of its divisors is an integer number (2198756).

Almost surely, 2^12002111 is an apocalyptic number.

12002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12002111 is a deficient number, since it is larger than the sum of its proper divisors (1190425).

12002111 is an equidigital number, since it uses as much as digits as its factorization.

12002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99213 (or 99202 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 12002111 is about 3464.4062983432. The cubic root of 12002111 is about 228.9562726778.

Adding to 12002111 its reverse (11120021), we get a palindrome (23122132).

It can be divided in two parts, 120021 and 11, that multiplied together give a palindrome (1320231).

The spelling of 12002111 in words is "twelve million, two thousand, one hundred eleven".